Full Product Manual

ROCKWOOL
6
The rafters in cathedral ceilings are
usually made of 2 x 10s or 2 x 12s and
ROCKWOOL Comfortbatt
®
is ideal for
insulating around those rafters.
Maintaining a minimum of two inch of air
space between the insulation and roof
deck is recommended to help prevent
moisture damage and ensure long roof
life.
Step 1
In cathedral ceilings, the insulation should be stapled or
held in place by pressure against the sides of the rafters.
Step 2
An air space between the insulation and roof sheathing,
(most building codes call for a minimum of 2” of air
space) ventilated at ridge and soft, is desirable in
cathedral ceilings.
Note: If unfaced material is used, a separate vapor
retarder should be applied facing the living area after the
insulation has been installed.
1
Shingles
2
Sheathing
3
2” x 10” Roof Trusses
4
ROCKWOOL Comfortbatt
®
(30/32)
5
Gypsum
1
2
4
3
Cathedral Ceiling
5